Burner



M. A. FESLER.

BURNER.

APPLICATION FILED MAR. 2, I9I8.

Patented Jan. 11,, 9210 117 Van r 01 M Q M. A. FESLER.

BURNER.

APPLICATION FILED MAR, 2, 1913.

Patented Jan. 11, 1921.

2 SHEETS-SHEET 2- UNITED STATES PATENT OFFICE.

MILTON A. FESTJER, OF OAKLAND, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO PETROLEUM HEAT AND PQWER COMPANY, A CORPORATION OF DELAWARE.

BURNER.

Specification of Letters Patent. Pate t d J n 11 1921 Application filed Marchfi, 1918. Serial No. 219,958.

To all whom it may concern I Be it known that I, MrL'r'oN A. FnsLER, a citizen of the United States, andresident of Oakland, county of Alameda, and State of California, have invented an Improvement in Burners, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

The invention hereinafter described relates to burners and more particularly to burners employing crude oil as fuel.

Heretofore burners of this class have been provided with a nozzle for delivering the oil to an outwardly flaring mouth which is rotated to cause the oil to flow outward by centrifugal force along the inner wall of the mouth and issue fromv the delivery end of said mouth in the form of an annular film. To break up and atomizethis stream of oil, a nozzle has been provided for delivering an annular stream of compressed air at a point adjacent the end of the-oil delivery mouth, the construction being such that the oil and air meet in crossing paths, and as a result the oil is thoroughly disseminated and in condition for *efiicient firing.

After the oil and air have been shut off from the burner, residual oil remains in the oil nozzle and the delivery mouth therefor and some of the residual oil is liable to work over the delivery edge of the mouth and thence back along the outer surface of the mouth onto he inner surface of the air nozzle and intoithe annular air passage. This oil is liableto carbonize on and restrict orobstruct-the oil nozzle, the air passage and other parts of the burner and prevent efficient working 'thereof.

One of the purposes of the present invention is to provide a burner having means for drawing residual oil from the passages after the oil is shut ofito reduce the amount of oil remaining in the parts ,to a minimum.

In the present instance. of the invention this is accomplished incidentally to the with drawal of the burner from the interior of the the furnace.

Another object of the invention is to pro- 'vide means for automatically cutting off the supply of oil and air from the burner as the latter is withdrawn from the interior of thefurnace.

And another object of the invention is to provide a turbine for rotatingthe delivery mouth for the oil nozzle, said turbine being driven by the annular stream of air used for atomizing the oil. The construction is i such that the delivery mouth may be positively driven at the speed required by air be best understood by reference to the following description of one good form thereof shown in the accompanying drawings, WhBI'BlIl-I- Figure 1 is a side elevation of the burner shown hereinv as embodying the invention; Fig. 2 is a horizontalsection taken on l1ne 22 of Fig. 1; and l F1g.3 is a verticalsection taken on line 3-3 of Fig. 1.

Referring to the drawings, the burner selected herein to illustrate the'invention may be provided with a support or'plate 1 adapted to be connected by suitable means to'the front end of a furnace which may be of usual construction, and therefore, is unnec- 'essary to show herein. This plate mayhave an aperture therein communicating with a tapered sleeve or flange 3 adapted to project cured by suitable screws 11 to the rear end i of said nozzle.

Suitable means may be provided for conducting the oil within the annular stream of the fluid. To accomplish this, in the' present instance, a tube or conductor 13 is mounted in the air noz'zle with its rear end 15 projecting through a central opening in @the plug 9 in saidnozzle. The conductor.

may be confined a inst move'ment in the direction of its longitudinal axis by,a flange 17 engaging the inner face of'the plug 9% and a nut 19 threaded to the outer on said conductor and adapted to engage a head 21 on said plug. To supply oil to the com ductor, a pipe 23 may. be provided having a axis with its forward end 27 threaded into a lug 29 projecting laterally from the fluid conducting nozzle A tube 31 telescoping into the horizontal portion of the pipe 23,-

. has a closed end 31 and a port 33 movable into and out of registration with the transverse portion of the pipe 23 for purposes more fully hereinafter described. The front end of the tube 31 may be threaded into the" plate 1, referred to, and communicate with a port 35 adapted to receive oil from a suitable source of supply through a pipe (not shown) which may be connected to the tapped socket 37 in the plate communicating with the port 35. To prevent leakage between the pipe 23 and the tube 31, a suitable stufling box maybe provided comprising a gland 39 threaded into th "lug 29 and adapted to confine suitable pacliing ma terial 41 between said gland and the front end of the pipe 23.

The air nozzle 7 may have a lug 43 pro jecting therefrom diametrically opposite to thelug 29, said lug 43 being bored to receive. a guide rod 45 having its front end threaded into the plate 1 and a cotter pin 47 at the rear end thereof. The construction is such that the oil conducting tube 31 and the thepipe 23, and be closed by the portion of said pipe 23 which is parallel to the axis of the burner, thereby automatically cutting off supply of oil to the burner.

Suitable means may be provided to admit air to the nozzle 7. To accomplish this, in the present instance of the invention, the nozzle is provided with a port ,49 (Fig. 2) communicating with a boss 51 (Fig. 3) depending from and integral with said nozzle, and adapted to register with a neck 53 carried by an arm 55 projecting from the support 1. The lower end of this neck may be threaded for connection with a pipe (not shown) for conducting compressed air thereto. When the burner isprojected into the furnace, the boss 51 will engage a limiting flange 54 on the neck 53 and register with said neck as shown in full lines in Fig. 1, and admit air to the nozzle 7. When the burner is withdrawn from the furnace, the boss 51 will be moved out of registration with the neck, as shown in dotted lines in Fig. 1, thereby cutting off the supply of air to said nozzle. Suitable valve means may be provided for controllin the flow of the air through the neck 53. n the present instance, this means comprises, a butterfly valve 55 fast on a shaft 57 journaled in bearings adjacent the upper end of the neck 53. One, end of this shaft has a crank 59 fast thereon connected by a link 61 with the boss 51, the construction being such that when the burner is projected into the furnace, the valve will be automatically opened, and when the burner iswithdrawn from the furnace, the valve will be automatically closed.

The oil may be fed from the conductor, referred to, through a nozzle 63 (Fig. 2) and delivered from a lateral port 65 at the end of the nozzle to an outwardly flaring mouth 67 having a deliveryend somewhat smaller than the delivery end of the fluid nozzle 7, and leaving an annular passage between them. The mouth 67 may have a reduced inner end 69 threaded to the outer end of a cylinder or carrier 71 journaled on the oil conductor, 13. In the present instance, the carrier and conductor" are provided with ball bearing rings 73 and 75, the rings 73 being secured to the carrier between a circumferential shoulder 77 on said carrier and a nut 79 threaded to said carrier and spaced by a ring 81 fitted into saidcarrier. The ball bearing, rings are confined between a circumferential shoulder 83 on the conductor and a nut 85 threaded to said conductor,

said rings being spaced by a ring 87 fitted to said conductor.

The compressed air used to atomize the oil may also be utilized to rotate the carrier 71 and the oil delivery mouth 67. To accomplish this, in the present instance, a turbine 89 is provided preferably comprising a multi licity of short vanes projecting radially rom the carrier into the space between said carrier and the air nozzle -7 substantially to the inner surface of the latter. The air delivered through the port 49 back of the turbine, flows forwardly in an annular stream against the vanes of the turbine,

. 5 its firing atomizing of the oil and without a high blast such as would be injurious to the lining of the furnace.

In operation, the burner is projected into position in the furnace, thereby automatically admitting oil and air thereto and producing the rotation of the oil delivery mouth. The oil' and air will continue to flow until the burner is withdrawn from 1 the furnace when the oil and air are automatically cut off as described. When the burner is retracted, it will be out of range from the highheat radiating from the hot interior walls of the furnace, and as a con- 1 sequence, carbonization of any oil remaining on the burner or other injury thereto from said heat is prevented.

An important feature of the invention consists in provision for drawing residual 2 ment of said tube and pipe when the burner is withdrawn from the furnace. On the initial outward movement of the burner, the .pipe 23 closes the port 33 cutting off the supply of oil, and on further movement of f v the burner the tube with its closed end 31 acts as a piston to produce suction in the pipe 23, conductor 13 and nozzle 63, thereby drawin residual oil from the conductor and nozzle into the pipe 23 andpreventing carbonization of the oil on said parts. As a result, the passages are maintained always free and open for delivering the full amount of oil. essential for efiicient operation of the burner. Moreover, since the oil is with- 4 drawn from the nozzle 63, it cannot drip into the flaring mouth 67 and work back into the air passage between the mouth and air nozzle. As a consequence, the air passage is always maintained open and free for 46 delivery of the compressed air.

It will be noted that the tapered flange 3 of the burner supporting plate 1 is spaced a substantial distance from the air nozzle 7. i

into and out of firing position, said burner Air may be drawn through this space and 5 v produce a desirable cooling effect on' the burner.

While the burner has been described herein as employing compressed air to rotate the turbine and atomize the fuel, it' will be understood that other fluid may be used for this purpose if desired. It will be understood that the invention is not limited to the specific embodiment shown, but that various deviations may be made therefrom without departing from the spirit and scope of the appended claims. What is claimed is :v

1'. The combination with a support, of a -j'gburner mounted thereon movablev to and I from a firing position in a. furnace and havnozzle ing a fuel delivery mouth and a fuel nozzle for supplying fuel to said mouth, and means for drawing residual fuel from said nozzle automatically on movement of the burner from its firing osition.

= 2. The combination with a support, of a burner thereon movable to an active firing position in a furnace, and from said position to prevent carbonization of fuel thereonvfrom the heat of the interior of. the fur- .na'ce,and means to supply fuel to the burner including telescoping members for automatically drawing residual fuel from the burner as it is moved from its firing position.

3. The combination with a support, of a burner mounted thereon movable to a firing position in a furnace, and from said posi- "tion to prevent carbonization of fuel therefiring position and having a fuel delivery nozzle, and means to supply fuel to said including telescoping conductors relatively movable to admit or prevent flow of fuel to said nozzle on movement of said burner to and from active position, said conductors having provision for automatically drawing residual fuel away from said nozzle with a pump-like action as said burner is moved from its active position.

5. A burner comprising oil and air conducting members, one mounted Within the other, means to supply oil to said oil conducting member, means to supply air to said air conducting member, means to move 106 said members to and from active firing position, and means automatically to remove residual oil from said oil conducting member when said members are moved from said firing position.

6. The combination with a support, of a 1 burner slidably mounted upon said support and positioned to be slid longitudinally comprising a'fiuid nozzle and a fuel nozzle, conduits leading to the respective nozzles each having parts rigid with the support and burner respectively, said conduit parts slidable bodily relatively to each other, and means automatically operated by the sliding movement of said burner from its firing position to cut off the supply of fluid and fuel to said nozzles. Y

7. The combination with a support, of a burner slidably mounted upon said support and positioned to be slid longitudinally into and out of firing position, said burner comprising a fluid nozzle and a fuel nozzle, a conduit leading to one of the nozzles and having a part rigid with the'support and a second part rigid with the burner, said conduit parts slidable bodily relatively to each other, and means operable automatically by the sliding movement of said burner for controlling the supply through said conduit to its nozzle.

8. The combination with a support, of a burner slidably mounted thereon comprising fluid and fuel delivery nozzles, conductors for supplying fluid and fuel thereto, a valve in one of said conductors, and means connecting said valve with said burner for automatically opening and closing said valve upon the sliding of said burner on its support.

9. The combination with a support, of a burner movable thereon comprising fluid and fuel delivery nozzles, conductors for supplying fluid and fuel thereto, a valve in one of said conductors, and means including a link connecting said valve with said burner, that the valve may be operated on movement of the burner on its support.

10. The combination with a support, of a burner movably mounted thereon comprising fluid and fuel nozzles, means to supply fluid to said fluid nozzle, and means to supply fuel to said fuel nozzle including telescoping conductors relatively movable to admit or prevent flow of fuel to said fuel nozzle on movement of saidburner on its support.

11, The combination with a support, of a burner slidably supported thereby comprising fluid and fuel delivery nozzles, conductors for supplying fluid and fuel thereto, one of said conductors having a portion rigid with said support and a second portion rigid with said burner and movable bodily into and out of alinement with said first mentioned portion, a valve in said first mentioned portion, and means controlled by the movement of said burner for opening and closing said valve.

12. The combination with a support, of a burner movable to and from firing position and comprising a fuel delivery nozzle, a conductor for supplying fuel thereto, and means for automatically closing the fuel conductor and withdrawing residual fuel from said nozzle on movement of the burner from its firing osition.

13. he combination with a support, of a. burner movable to and from firin position and comprising fluid and fuel dehvery nozzles, fluid and fuel conductors having-parts carried by said support and burner, said conductor parts slidable bodily relative to each other, and means controlled by said sliding movement to prevent flow of fluid and fuel to said nozzles when the burner is moved from firing position.

14. The combination with a support, of a burner movable to and from firing position and comprising a fuel nozzle, a rotary fuel delivery mouth, a fluid nozzle receiving said fuelnozzle with a space between them, a turbine for said fuel delivery mouth having vanes projecting into said space, conductors to supply fuel and fluid to said nozzles, valves for said conductors, and means to close said valves and withdraw residual fuel from said fuel nozzle when the burner is moved from its firing position.

15. A manually operable burner comprising a fuel delivery nozzle, a fluid delivery nozzle, and a conductor for delivering fuel to said fuel delivery nozzle having pump means operable by the movement of said burner for withdrawing residual fuel from said fuel nozzle. 7

In testimony whereof, I have signed my name to this specification.

MILTON A. FESLER. 

